Dust barrier



Aug. 23, 1932.

U. TAUCHER DUST BARRIER Filed Sept; 20. 1930, 4 Sheets-Shet W W 3% 6 M Tm m a Aug. 23, 1932. TAUCHER 1,873,161

DUST BARRIER Filed Sept. 20, 1930 4 Sheets-Sheet 2 Aug 23, 1932. uTAUCHER 1,873,161

DUST BARRIER Filed Sept. 20, 1950 4 Sheets-Sheet s o o i li y/JunTauafiar Aug. 23, 1932. u. TAUCHER 1,873,161

DUST BARRIER Filed Sept. 20, 1950 4 Sheets-Sheet 4 [/;%azz QuakerPatented Aug. 23, 1932 UNITED ATES URBAN 'rnucnnn, or 3061: srnmes,WYOMING nUsrBAmrIEn Application filed; September 20, 1930. Serial No.483384.

This invention. relatesto a dust/barrier and it is an object of the.invention to provide: a device of this. kind adapted "tor'usev within amine and which operates automatically to createa dust cloud to preventthepropagas tion of an explosion. i a

The invention also hasiiior an .objec'tto ro vide an apparatus of thiskind which autcv matically becomes effective. upon am explosion within amine passage and which-.appar ratus when. efiective creates; a.-clo.ud.of dust of shale or other inert material to prevent propagation of suchexplosion.

An additional. object. of the: invention is to provide an apparatus ofthist.-inclsuding a plurality of suitably positioned ireceptacl'escontaining a supply of inert dust, such as shale, together withmeansassociated with saidreceptacles. op eratingautomatically as a result ofan explosion to re' easeg said dust.

The invention consists :in the detailsaoii con:- struction and in thecombination and arrangement of the several parts-of: my improved dust.barrier whereby certain portant advantages are attainedwand-the devicerendered simpler, less expensive and Y otherwise moreconvenient:andadvantageous for use, as will be hereinafter more:.ful'ly'set forth. 7

The novel features of my invention will hereinafter be definitelyclaimed.v

In order that my invention may be; the better understood, I will nowproceed to describe the same with reference-to the 31660111: panyingdrawing, wherein r Figure 1 is a view in side eleva-tion: of somewhat adiagrammatic character illustrating barriers constructed in accordancewith an embodiment of my invention: ill-up:- plied position;

Figure 2 's a fragmentary view in: top plan of one of the devices asherein disclosedigf Figure 3 is a sectional view taken substantially onthe line 33 of Figure 2'; Figure 4 is a sectional ew taken substantiallyon the line- 4.4: of Figure 2:; Figure 5 is a sectional view takensubstantially on the line 5-5 of Figure 2; Figure 6 is an enlargedfragmentaryfsectional view taken on the same line as-3'--3-; Figure: .7is; a iiragmentary View in bottom plan of the cylinder .QiEClpQRfSBd-lIXQI-Ztly associated. therewith.

- Figure 8-is an -enlarged fragmentaryeleva as ti'onal View takenat one.end portion of one of the apparatus, as herein disclosed Figure 9 'is afira'gmentary View at top I plan of the structure illustrated inEigurerSi;

' Figure; 10-isa sectional view taken-issaibs no stantiail'ly on theline l0-,10-of.Figure"8. f

. As illustrated. inv Figure 1:, two apparatus A and "constructedaccordance with an embodimentv of "my invention are suitably positionedwithin the passageway of mine,

the apparatus B being termed whatis known as a"repea ter and ispositioned preferably at aapoint within: the passagewayh igher-thanthatoithe apparatus r,

These two apparatus are duplicate in? construetion but reversely'arranged, the-apparatus B intending to become effective in th'e .e-Iventot a second explosion or: itlareeha'ck. Each ofthewapparatusAandB-isoiiazny preferred: dimensions and includes; as man dustreceptacles as the requirements of practice 'maydictatez a As disclosedin the accompanying draw .izngsi, each of. the apparatus. A. andconip-rises: side members which, at predeterrmined points. spaced?l'ongitudinallythereot, are connected. by" the "cross. members 2 eachdisposed on a lateral incline with respectht'o the vertical. or theplane occupiedhy the side members: .11. 'Each of these "crossmembers 2constitutes a wall for a dust receptacle and enacting with each.ofthese'cross members or wallsfizis a swingingwal-l3iwhiclnwhieniclosed with respect to the member or Qt is Ein clined upwardly from" thelower end oith'e member or wall 25in a direction therefrom.Withxthe-wafillg closed areceptacleisprovided adapted to contain asupplyiofsuitableuinert dust; such as dust? J I The upper marginal}portion oi? eaehofi the walls or plates; 3-:is provided withhook-il-il're members 5 whereby'the :maybepitotal- 1y suspendedtrom across bar orrodifiibridgiii-1g the. space between the side. members 1 and restingthereonv from above. The upper rto.

surfaces of the members 1 are provided with transversely disposedgrooves or channels 7 which receive the end portions of the bars or rods6. Coacting with such end portions of the rods or bars 6 are theretaining or holding latches 8 herein disclosed as pivotally connectedintermediate their ends, as at 9, to the upper edgeface of the sidemembers 1.

The lower longitudinal margins of all of the walls or plate 3 areoperatively connected, as at 10, with the transversely spaced parallelbars 11, said bars being connected by an end cross members 12.Substantially midway its ends the cross member 12has secured thereto anextremity of a coil spring 14 of desired tension, the opposite endportion of which being operatively connected to an end portion ofan'elongated arm 15.

The end portion of the arm 15 remote from the end member 12 terminatesin a lateral'e-xtension or lip 16 which, when the walls 8 are in theirclosed or normal positions, is inserted from below up within a holdingcylinder 17. This cylinder 17 is operatively supported by alower crossmember 18 suitably secured to 21 slidably placed within the cylinder 17.

The upper end of the cylinder 17 is provided with a cross bar 22 andinterposed between this bar 22 and the inner end of the plunger 21 is anexpansible member 23 of desired tension and which is herein disclosed asa coil spring. When the plunger 21 is retracted within the cylinder 17,the member or spring 23 is placed under tension and the plunger 21 ismaintainedin such retracted position by a rock arm or trigger 24engaging the lug'20 from below. This rock arm or trigger 24 is carriedby a shaft 25 rotatably supported between the side members 1.

The shaft 25 also carries a depending wing 26 which, under the force ofan'explosion', will swing in a direction to release the trigger 24 fromthe lug 20 whereupon the plunger 21 will be forced downwardly forcontact with the extension or lip 16 free of the cylinder 17 whereuponthe weight of the dust within each of the receptacles will swingithewall 3 of'such receptacleinto open position to permit-release of the'dust therein. 1

As the dust drops it passes through a screen fabric 27 underlying thevarious receptacles andwhich serves to assure an effective distributionof the dust to create a cloud which will resist propagation of anexplosion.

The repeater apparatus B, as before stated, is positioned above orhigher than the appainafter' claimed.

.ratus A and the apparatus B is intended to be effective upon a secondexplosion or flareback or return of the force of the first explosion. Bythe use of the two apparatus the force of the explosion is caught onboth sides, that is to say, going up the passage and coming back.

Each of the wings 26 has connected thereto as at 28 the extremity of aflexible member or chain 29 which is also secured as at 80 to the member31 depending from the apparatus. These chains or flexible members 29coacting with the wing 26 in the apparatus B are two in number, while inconnection with the wing 26 in the apparatus, only one is used,

and provide effective means for limiting the also be obvious that myinvention is susceptible of some change and modification withoutdepartingfrom the principles and spirit thereof and for this reason I donot wish to be understood as limiting myself to the precise arrangementand formation of the several parts herein shown in carrying practiceexcept'as hereout my invention in I claim 1. A dust barrier apparatuscomprising a dust receptacle having a movable Wall movable intodustreleasing position,amember operatively engaged with the movable wall andengaging the cylinder to hold the movable wall in closed position, aplunger working within the cylinder, means for holding the plungerretracted,said holding means ineluding means operating-under force ofanexplosion in one direction to release the plunger and preventing releaseof the plung er under force of an explosion in the opposite direction,the plunger when released disengaging the member from the cylinder, andmeans for normally urging said plunger toward said member.

2. A dust barrier apparatus comprising a dust receptacle having amovable wallmovable into dust releasingposition,a member operativelyengaged with the wall and engaging the cylinder to hold the movable wallin closed position, a plunger working within the cylinder, means forholdingthe plunger retracted, means for normally urgcarried by the shaftand coacting with the plunger for holding the same retracted, anoperating wing carried by the shaft, and means for holding saidoperating Wing against movement in one direction, movement of the Wingin the opposite direction effecting release of said holding means,release of said holding means permitting movement of the plunger towardthe member to release the member from the cylinder.

In testimony whereof I hereunto aflix myv signature.

URBAN TAUOHER.

